//: strings/IntegerMatch.java
package strings;

public class IntegerMatch
{
    public static void main(String[] args)
    {
        System.out.println("-1234".matches("-?\\d+"));
        System.out.println("5678".matches("-?\\d+"));
        System.out.println("+911".matches("-?\\d+"));
        System.out.println("+911".matches("(-|\\+)?\\d+"));
    }
} /*
   * Output: true true false true
   */// :~
